Fuel-burning apparatus for motor-vehicles.



m 892,569. PATENTED JULY 7, 1908. G. E. WHITNEY. FUEL BURNING APPARATUS FOR MOTOR VEHICLES,

APPLICATION FILED EB.18,1901.

F 6 SHEETS-SHEET l.

00 0 9 l 7 Y L U J D E T N E T A P T E N T 1 Hr W H am FUEL BURNING APPARATUS FOR MOTOR VEHICLES.

APPLIO TION I .1 1 01.

A F LED FEB B 9 6 SHEETS-SHEET 2.

Lwcnlor: GeorgeflVl hilmy M 7 dalwzw Witnesses;- Zfl No. 892,569.' PATENTED JULY '7, 1908.

G. E. WHITNEY. FUEL BURNING APPARATUS FOR MOTOR VEHICLES.

.APPLIUATIUN FILED FBB.18,1D01. 6 BHEETB BKEET 4.

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No. 892,569. PATENTED JULY 7, 1908.

G. E. WHITNEY.

FUEL BURNING APPARATUS FOR MOTOR VEHICLES.

APPLIOATION FILED PE .1 .1901.

B 8 BSHEETS-SHEET 5.

N I 12 A A 0 No. 892,569. PATENTED JULY '7, 1908.

G. E. WHITNEY. FUEL BURNING APPARATUS FOR MOTOR VEHICLES.

PPLOATO 1 1. A I I NI'ILED FEB 18 90 GSHEBTS SHEET 6.

inventor.- iieovyeli'. T/Vhiinc UNlZTED STATES PATENT OFFICE GEORGE E. WHI'LNEY, OF BOSTON, MASSACHUSETTS, ASSTGNOR, BY MESNE JiSSIGNMlQNlXS, TO STANLEY MOTOR CARRIAGE COMPANY, A CORPORATION OF l\.l;\SSAllUbl'l"lS.

FUEL-BURNING APPARATUS FOR MOTOR-VEHICLES.

Specification of Letters Patent.

Application filed February 18,1901.

Patented July '7', 1908.

Serial No. 47,723.

, for generating the steam or other lllllt pressure by which the vehicle is pro polled.

The various features of my invention will be best understood after a description of an apparatus made in accordance with the same, and will be particularly pointed out and claimed zit the end of this specification.

Figure 1, in side elevation, shows a typical motor-vehicle equipped with apparatus made in accordance with my invention; Fig. 2 is a horizontal section on the dotted line 2-.2, Fig. 3, showing the burner, regulator and other of the parts, in plan view; Fig. 3 is a vertical section taken on the dotted line 3---3, Fig. 2, with a part of the piping shown in elevation; -il is a side elevation loot;- ing from the right, Fig. I), the parts being shown in this 'ligurc on an. enlarged scale; Fig. 5 is a vertwal cross-section of the burner, Fig. 5, the section being taken on the dotted line 5--5 looking toward the right; Fig. (l is a horizontal section taken on the dotted line li e, Fig. 3, looking down; Fig. 7 is an cnhtrgcd detail in section, showing a formation of one ol' the bu ruer tubes; Fig. 8, a lull sized detail ol' the discharge device of the distributor, this view being a horizontal section on the dotted line, 8- R, Figs. 3 and S); Fig. ll, a vertical cross ulion on the dolled line 9 4), Fig. 2%; Fig. 10, a vertical longitudinal scc'l ion on tluulotted line 1 U i), ,l ig. S); Fig. ll, an enlarged sectional view of the regulator, ils regulating valve and the accessible connections between the same.

in the cn'ibodii'nent ol' my invention selected forillustration herein-and shown in the drawings, B is a part of a suitable boiler provided at its lower end with a water leg, B,- surrouuding or inclosing the 'lirc-box or comhustion chamber U.

\Vithin the combustion chamber is ar ranged a suitable burner apparatus, the same composed as herein shown of a conical side wall, a, with top and bottom plates, (1/, a, forming between them one or more mixing cluunbcrs, 1). The top and'bottom plutcs, 0, (L2, of the burner are connected by the separate burner devices shown in section, Figs. 3, 5 and 7. Referiug to these figures, the top plate, a, is provided with a series of apertures lormcd'by llai'iging the metal ol the plate upwardly to form a series of ring-like flanges, (L The bottom plate, a is provided with similarly arranged apertures, similarly formed, to leave upwardly extended ring-like flanges, (1), preferably, however, slightly smaller in diameter than the diameter of the ring-like 'llanges, a, of the top plates. Air tubes, 0], are inserted l'rom the bottom through corresponding npcrturcs in the two plates, as shown in Fig. 7, said tubes being expanded, as by a tube expander, into firm and permanent contact with the inner faces of the hinges it, which thereby not to hold the said air tubes firmly in position with their upper ends extending upwardly through the apertures in the top plates, as shown, the uppcr ends of said air tubes for the best results projecting slightly above the level oi the surrounding llangcs, (at. "lhe said air tubes are also separated from the sm'r un'ding flanges, a, to leave ring'like air spaces, o due to the diil'crcnce in diameters between the exteriors ol" the air tubes and the interiors olthcllungcd apertures in thctopplalcs. Reinforcingrings, o are preferably employed surrounding the ring-like flanges, a, and supporting the hill or and the air tubes, (1 that are expanded against the interiors of said rings. 'lhis construclion leaves uninterrupted nnnularspm-cs through which gz'is admitted to the inlcrior ol' the burner may escape and thoroughly mix with the air drawn upwardly within the air tubes from beneath the burner, thus l'urnislu ing a much more complete and ell'cclivc combustion, and acting more ellicienlly to draw the air upwardly through the inclosed nir tubes than do constructions where the gas is projected around the air tube in ring-like serics of separated jets.

The burner is divided interiorly and substantially diametrically by a wall, (I, so that there are in ell'ect two distinct but essentially similar mixing chambers, D, Fig. 6, each chamber having an inlet through a mixing tube or conduit, D These mixing tubes, 1'

conduits, D Fig. 6, are divergently or radially arranged one with reference to the otli r, their entrance ends adjacent the distributing device being much closer together than" their delivery ends, which, as shown, are located near the outer curved wall of the burner, whereby the gas entering through the tubes, as will be described, is projected into the chambers D, D, free of the burner devices therein in a direction which is both u and tangential to the peripheral wall and against the top plates of the chambers. This causes the gas to be spread out in all directions, some of it spreading immediately to adjacent burner devices, the remainder lot lowing around the free spaces adjacent the curved walls of the chambers, thereby quickly reaching the burner devices located in the more remote parts of the chambers. Greater uniformity in the several jets issuing around the several air tubes in tile-chamber is thus obtained than would be possible be said tubes to deliver the near the less ire i middle or inner portions of the chambers, Where its passage to the various burner devices would be at once interrupted by the many air tubes or Ol'JSiJIUGtlOhs with which the middle portions of the chambers areiillcd.

In actual practice I have found this ment of conduits or tubes for deliver gas to the interior of the burner to be oi greatest value, since tlie .inoi'e uniform coinbustion obtained tl'iroug'liout the entire area of the top oi the burner adds greatly to the eliiciency of the burner and the facility 'witlii WillCll steam. is generated and maintained.

Arranged substantially diametrically through the middle of the burner, and 6, is what 1 call a torch chamber, ll, Fig. 6, one side of which is shown formed by the division wall, d, Fig. 6, and the otber by a second wall, d, Fig. 6. This torch cliainber has its own independent inlet or inixii'ig tube, It, shown as arranged on an incline leading from a point below the burner upwardly through the bottom of the torch chamber, terminating preferably sliown in F the top plate, a", within the area of tliisi ber H being 'incly perforated, as at ll, permit the escape of the gas entering; the chamber through said tube 5. The top plate, a, innncd rely over the discharge on of the mixing tubes, is also provided tine perforations, D to pern'ut escape or part of the gas entering tlie chambers is through said tubes D .l have applied to the top plate the area occupied by the line H and D reinforcing or lllll a (shown best in olates may be other ward he areas mentioned, whereby the perforaion" through the said plate at tllesepoints are made in e'liect so many long passages of such small diameter as con pared with their length that the flame will not draw back lillZ'OLl. tllBl'Il. in other words, I have V. tonne by experiment that a flame is apt to from a usual source is in through a pipe or conllg. I2, tlra is first given a turn around tlie combustion chamber and'witliin the wat r leg surrounding" the same, and, after it again leaves the boiler siell, is connected to a dowi'iwardly extended pi e, 1 l an upturned end that rises loosely ougl'i a tliiinble, connecting the top and bottom plates of the burner, and enters one end of retort, P, that extends horil y over the burner, in the line or" the torch chamber, ll, and close to the top of the said burner, as best shown in Fig. 8, so, that iiainc issuing from the torch chamber tin'cwgli tnc porter tions, H, will heat the and its cont .i d fluid. 1e tliiinble, I, through which the retort ,ie, l rises in through the burner, n enough arger than the said pipe to nit the latter to move back and forth i i tl eiqiansion and contraction of the latter being pr *ierably firmly held V ie exit nine at its o; iirsito end, tolbe debed. The ends of the retort, 1 are packed at 10%, Fig. 3 to prevent leakage under dilicronces in expansion and contraction I .1 said retort and its end fittings.

' ow describe the distributing device ind c ted generally by C. This distributer enten :3 at its top and l the adjacent P, t. e fuel first entering c, Fig. 9. This pasits inner end in an oria= is directed upwardly into, and in l lie axis of the torch mixing tube, it "1 '11 big. 3 Ti lie-orifice, 0, 1s

valve, 0 the stem of .adec. at 0 and screwed into a l V I! M bolder, e

eplined within the,

into the open, un-

' iets, shown, ot a bed; shown as a castcap, a, through which the valve stem is extended, with its end down-turned to furnish means by which to rotate the stem and force the valve against or away from its seat, and thus close or open the said orifice, c. The bod is ordinarily made of composition,

whi e the valve stem and valve are usually of steel, and if the valve stem were screwed directly into the body of the casting and the valve closed when the casting was heated, and the casting and stem thereafter ermitted to cool, as at the termination o a run,

the casting by contracting at a greater rate and further t an the valve stem would contract upon the valve and its stem so tightly as to prevent subsequent opening of the valve to start the burner and also would be apt to injure the valve seat permanently. To obviate this I have provided the s lined steel sleeve, 0, within which the va ve stem is threaded, and any difference in the rate of contraction of the casting and the valve stem is taken care of by the splined sleeve, which will slide as may be necessary to maintain the contact between the valve and the seat and yet not unduly press the one u on the other, the compressibility of the pac ring, 0", acting as a yielding support to keep the valve always to its seat yet permit it to retract with the seat as the latter contracts in cooling.

Referring now particularly to Figs. 2, 9 and 10: the horizontal assage, c, has an outlet, c leading upward y into a chamber, c said passage, c being controlled by a gravity ball valve, c normally seated upon a conical seat surroumlingthe end of said passage. From this chamber, a Fig. 10, two branch passages, c", lead downwardly and along to near the ends of the distributing device, thence upwardly again and into the discharge tips, 1:, Figs. 2, 4 and 10. These discharge tips, c, are axially in line with the mixing tubes, D so that the said tips 'n'oject the delivered thereby into and through the said tubes, thence into the mixing chambers of the burner. The passages c" leading to the ti s, c are respectively controlled by suitab e valves, 0, threaded in the ends of the body of the device and. having their stems downturned, as shown in Fig. 10, to enable them to be rotated, as is necessary to open and close the said passages. The top ol the ball valve chamber, 0", Fig. 11,is closed by a fitting, c, clamped in position by an exterior coupling, 6. This fitting c has screwed into it, one end of a tube, 0, Figs. 10 and 3, the upper end of said tube being in turn screwed into a fitting, c having an arm, c, that-car."

to receive a washer, e secured in position by riveting over the wall of the counter-bore, as shown, and in a central opening in the washer, c, is arranged a valve stem. or red, c,'that 9X tends upwardly within the tube c Fig. 3, and at its upper end has fastened upon it a collar, c between which and the saic washer, c, is interposed a spiral spring, c surroumling the said valve stem, 0. This spring acts nor mally to lift the valve stem, 2, away from the ball valve, 0, the limit of upward movement of the said stem being fixed by contact oi the said collar, c, with a washer or disk, (1, ar

rangedbetween the upper end ol' the tube c and the packing e through which the ex.- tended end of the valve stem passes out-- wardly from the said. tube, c7.

Referring to Figs. 3 and 1 It, the arm, c, has screwed into it laterally the yoke the arms of which have overturned ends, if, that hold a cross-bar, This cross-bar, f, at middle, holds a nipple, f, tha t is threaded at one end to receive the threaded end of a pipe, f, leading to the interior of the boiler or other holder of the controlling pressure, l nipple at its opposite end being brazed or otherwise firmly attached to a diaphragm 'platc, f"'. lln the embodiment of my ii'wcntion shown in Figs. 3 and 11, a second diaphragm plate j", is opposed to the diaphragm plate the two being tightly clamped together at their peripheries, as by screw bolts, with an intervening packingj whereby a tight pressure chamber is formed between the said plates, into which leads an opening, 7, Figs. 11 and 12, in the nipplcf and communicating with the 'pipe j' A smal rod f, is arranged in the yokcf, one end ot the said rod resting. against the diaphragm plate, 5f, the other end resting against one arm ot' a bell crank levcr, the other arm of which hours upon the top ol'the extended end of thc valustem, c".

A set screw, f Figs. 1'1 and 12, threaded in the nipple, and accessible from the c1.-

terior ol the regulator when thc )l )e' is un j coupled, hears at its inner cud against; the inncr face of the diaphragm platc f so that by setting up the screw, f", the diaphragm plates may be separated more or less to thus set the diaphragm, as it were, to a given tension equivalent to a given pressure below which the pressure admitted to the chamber between them will have no cll'cct in separab ing them; but the moment the contained pressure acts upon the diaphragm plates with greater pressure or cll'cct than that exerted by the set screw, such pressure will then l'urther separate the said plates, and through the rod f and bell cranlcf depress the valve stem c upon the top of the ball 'alvc r" to hold the latter firmly against its seat for a purpose to be described.

Since the diaphragm plalc j/ is rigidly held by its nipple f in the cross-bar f yoke, any movement of said diaphragm is communicated through its periphery to the diaphragm f and is thus added to the move ment of the diaphragm f, the combined or cumulative movements of the two being eX- pended in moving the rod f and consequently the valve stem 6 the result being that a very pronounced and quick movement is obtained when the given pressure is reached.

The resiliency of the diaphragm plates, that is, their inherent elasticity, is alone relied upon in the construction shown to oppose the controlling pressure admitted to the space between the diaphragms; consequently,

the separation of said diaphragms under the action of the controlling pressure, is a constantly progressing movement,the greater the pressure the more extended the movement. And the set screw, f acts to set the diaphragms by first separating them or moving them progressively a given distance, and the controlling pressure, when'it reaches the desired or predetermined point, acts also progressively to move the said diaphragm plates beyond the limits to wnich they were moved or separated by the adjusting of set screw.

As the diaphragms separateat their inid dles, their peripheries of course tend to contract in diameter or move inwardly and radially, and this radial movement of course takes place simultaneously and in unison with the outward movement of the middle portions of the diaphragms, and inasmuch as the peripheries of the two move radially together, one actin as a peripheral support for the other, and both together holding firmly between them the packing, f, it is clear that the packed peripheral joint between the two diaphragms is not disturbed in the least for there is no slip whatever or sliding movement between either diaphragm and its packing, the whole moving in unison as one structure; so that the tendency to leak is reduced to a minimum and is practically ml. The holes in the peripheries of the diaphragms, Fig; l 1, for the clamping screws, f, are enough larger than said screws to permit the peripheral movement of the diaphragm above de scribed,

The operation of the apparatus thus far described is as follows:-viz., with the burner in operation, gasolene or other liquid fuel contained in the pipe P surround ing the combustion chamber is heated to a high temperature; it then passes through the pipe I? to the retort 1, where it is further heated to an extremely high temperature. flows down through the pipe P to the distributing device, where part of it issues as a gas through the orifice c, and is projected thereby through the torch mixing tube It,

From the retort P the heated fuel seaeee of the i Fig. 8, drawing with it the necessary quantity of air, with which it becomes mixed before its discharge into the torch chamber, where it supports the flame or combustion throu h the small perforations H in the top oi said torch chamber. Another portion of the liquid fuel passes from the horizontal passage 0, Fig. 9, in the distributing device'up through the passage 0 lifting the gravity ball valve 0 thence divides and flows along the two passages 0 Fig. 10, passing the valves 0 to the tips a, through which it is projected as a gas diagonally upward into the mixing tubes D Fig. 6, taking with it the required quantity of airto be mixed therewith and delivered into the minim chambers l) of the burner, as described. ll hcn the steam within the boiler reaches the required pressure, it acts through the diaphragm regulator described to depress the valve stem e and positively seat the ball yalve c lligs. 9 and 10, thus cutting oil the supply of liquid fuel to the two tips 0 and correspondingly reducing the heating effect of the burner until the steam pressure, responding to the reduced heating el'l'ect of the burner, drops below the given point, when the diaphragm regulator, under the influence of such chan e of pressure, again permits the valve 0 to lift for the passage of fuel once more to the tips, 6 Thus the fluctuations in steam pressure automatically regulate the supply of fuel to the tips,

c, whereby substantially constant steam rcssure is maintained. he dia hra 'm I, 1 lb plates, f, herein are returned to their normal position, upon reduction in steam pressure solely by their own inherent elasticity or resiliency, and in practice I have found this device so sensitive that it will open and close the valve, 0 under fluctuations in pressure that are not apparent upon the ordinary steam gage so that, practically speaking, an absolutely uniform pressure is maintained within the boiler. The preliminary setting of the diaphragms at a given pressure, as described, below which the regulator does not respond, is of great value, since it prevents any fluctuations or movements whatever below the pressure at which the regulator is thus set, and when the regulator finally does respond, it is by an exceedingly quick and positive movement, so that the burner is maintained, as it were, wide open, until the checking pressure has been reached, when it is promptly and completely closed, and is again opened upon the slightest diminution in the required pressure.

In starting the burner for the first time, it is desirable as a preliminary step, to heat the body of the distributer C, so as to vaporize the liquid fuel first delivered to it..- For this purpose, I have provided a steam pipe, 0,

ceases a suitably connected with the boiler and entering the distributer at a suitable point (best shown in Figs. 8 and where it communicates with a passage, 0 (shown in dot ted lines Figs. 8 and ill), and follows along the casting to about the middle thereof, where it turns and makes a loop, 0, to one side substantially under and along the portion of the casting that contains the passage 0, and orifice, 0 (see the dotted lines, Fig. 8, and full lines, Figs. 9 and 1.0), said passage thereafter continuing on, at o, to the further end of the said casting, where it turns upon.

itselflat 0, see Fig. 9, and returns, at 0", to

the same end of the casting at which it entered, said passage at its outlet end terminating in a downwardly extended nozzle, 0, under the control of a valve, 0 Fig. 9. To start the burner, the valve 0 is opened, and the circulation of steam is thus established through the train of passages thus described, the presence of the steam acting to heat the body or casting as-a whole, so that when oil is admitted to the torch orifice, c, Fig. 9, it

is immediately vaporized by the heat of the casting and projected into the torch tube and ignited beneath the retort, thus heating the Whole volume of oil within the retort on its way to the distributer, so that the temperature of the fuel itself thereafter is sullicient to maintain the casting sufficiently hot, without requiring the continued use of steam.

The distributed steam for thus heating the distributer casting may be obtained from some extraneous source, or, in cases where the vehicle is temporarily SbOQPQt'l and the burners extinguished fora short time, as when the operator is making a call or stops in his run for a short time, the boiler will retain suliicient steam for a length of time suflicient to again heat the distributor in the manner described when it is desired again to start the vehicle. If no steam is at hand for heating the casting, it may be otherwise heated, as by a torch, or an alcohol flame, or something of the sort, as is common in burners of this type as at present employed.

in the diaphragm regulator described and shown in Figs. 3 and 5, one of the diaphragm plates is carried by the cross-baxyf, the sec ond diaphragm plate being carried by it, so that the cumulative movements of both are communicated to the rod, f? Rotation of the yoke f in its threaded supporting arm, a by moving the diaphragms bodily to wards or from the bell crank, f furnishes a quick means for adjusting the mechanism connecting the diaphragms with the valve 0 that the said yoke and the diaphragms carried by it are held frictionally in any radiative or adjustive positions into which they are moved. It will be noticed that the con nections between the diaphragm and the valve, 0, are exposed and accessible. This is of value since efore starting the vehicle the operator, by placing his finger upon the horizontal arm of the bell crank, f, or by means of a string, .9, leading from a'point near the seat to said bell crank may vi irate said. bell crank and thereby move the valve stem, c, vertically against the action of its spring to make sure that the same is free to control the valve under the action or" the diahragm when stef :n is gotten up and the vehicle is in use. This accessibility of the coin necting mechanism for preliminai testing independently of the diaphragm regulator of great value in practice; for should the mechanism stick at any point, and refuse to respond to the control of the diaphragm, much inconvenience would be encountered when upon the road.

Referring to Figs. 3and 5, it will be no ticed that the torch mixing tube, 7:, and the mixing tubes, 1)", that lead to the mixing chambers of the burner, have a pronounced incline u wards with curved deflecting \valls, d, at tieir ends where they enter the mixing chambers, so that when starting the burner or at any time it the jet devices should project any quantity of liquid fuel into the tubes, such l'uel would strike the deflecting walls, and have its velocity so much reduced thereby that it would immediately gravitate down the bottoms of the tubes and drop out therefrom at their entrance ends, instead of'entering the 'mixed chambers and collecting therein and in the said tubes and sooner or later taking lire, would be the case were such mixing tubes in whole or in part substantially horizontal, as heretofore commonly made and. with no means provided for breaking the velocity of entering liquid to prevent it reaching the mixing chamber or chambers. it is important that the diameters or cross sectional areas of these mixing tubes be ample, not only to admit the required quantity of air for the best combustion, but also to prevent the discharge from the tips from acting likeinjectors. to impel any liquid fuel upwardly along the tubes and into the burner. The apparatusis also so constructed that any liquid fuel thus gravitating downwardly and out of the lower ends of the mixing tube may fall to the ground, for should it be permitted to collect in or upon any adjacent part of the apparatus, it would quickly ignite with damage to the apparatus and the machine.

I have already referred to the uniform distribution of gas obtained within the mixing chambers D, D by delivering the gas there-- into as described, Another to such an arrangement of s plm devices in comics with the 'stcd mixing chambers is that should it mishap make it necessary to close one of the let devices, c, the other ud its hell of the msy still be sod, so that the vehicle V rendered entirely helpless.

My invention is not limitet lei apparatus, either in Wh ole shown and lS3fll 3(lI for e v Ell? the dia=- phlegm regulator 161'6 (lesclibed, is but one form of iec'ulctoi' that may be iployetl -for the apparatus, this regulator, its connecting mechanism end. suggested modifications thereof being disclosed and claimed. in other application filec: ivisioml hereof lvley l l N 61,012.

embodiment cl my uniting myseli to l to secure by invention, an details, Wlia Letters Patent, is:

and tow-suits .1, c, 1. [A3 GOLtOlIl d thief convergence of sale sine wells.

In o? the close descsibco,

U- one or more mixing chem slly converging smile W 1 tom plates, en" supo tubes lesctu stud chambers c;

1;: through plates, on 1- let for each mixing chsmbeif ject its supply t n'ough the bottom towards the top plate of its chamber t point substantially unobstructed by supply tubes to deflect the sup direction of convetgence of said e ln s humor of n mlity of mixing chsmbers each pro burner devices including one o1 n openings having central 2 1' supply, fuel supply conduits for said chambers, each chamber being prov 'led in'tiie immediate vicinity of the de ivery ends of sold conduits with a. series of s cell exit openings of much ester length then diameter, to operate as escribed, the entrance of each fuel supply than dis-motor, the entrance of esch fuel supply conduit into its mixing chamber being in space free from burner devices.

6. ln s burner 01" the class described, top and bottom plates inclosing between them one or more mixing chambers, a fuel supply conduit or conduits for each mixing chamber,

the top plate in the icinity of the deliver end of d conduit being provided With a series of perforations of considerable length comparison with their diameter, and with other distributed exits also for the mixing chsmbe'r.

T. ln s burner of the class described, the top and bottom pistes inclosing between them one or more mixing chambers provided with conduits and. having a series of exit openings for the contained gas, and an air supply arranged contiguous to each,tl1e said top plate being thickened in the vicinity of Le lehvmy ends of said conduits, and provided the/rect- With a series of small perform tions, the length of which greatly exceeds the diameter, to operate as cscribecl.

ln s burner of the class described, a retort longitudinally arranged in close proxsaid burner and to receive heat theret'rom end subject to expansion transversely said burner, inlet and outlet conectlcns to]? said retort, said connections passing; through said burner, one of said 0011* ncctions being free of ssicl burner and the other fixedly attached thereto, for the purpose described.

9. In a burner ol' the class described, a vaporizing retort arranged in close proximity to the burner, e jet device connected with the rctoi't consisting of a body provided with fuel supply passages, a jet orifice leading therefrom, and means to introduce a heating medium Within said, body to host the letter, said means extending to a point close to said jet orifices to preliminarily heat the some.

10. In a burner of the described, a vaporizing retort arranged in close proximity to thetbumei, a jet device connected with the retort, consisting of a body provided with fuel supply passages and jet orifices leading therefrom and means to introduce a heating medium Within said body to best the latter.

11. ln a homer of the class described, a. jet orifice having a fuel sup ly conduit rovidcd at its ends with. jet oi'i ces and Wit 1 en bottom p ate flan ed, air tubes fitted within the flanges m 10 the ottom plate and connecting correspondand a heating coning apertures in said plates and reinforcing s surrounding said flanges.

n testimony whereof, I have signed my name to this specification, in the presence of two subscribing Witnesses. i

GEORGE E. WHITNEY; Witnesses:

FREDERICK L. EMERY,

A. E. OHESLEY.

rin 

